Anti-backflow compact distribution valve suitable for high-pressure upward conveying working condition

Abstract

The invention discloses an anti-backflow compact distribution valve suitable for a high-pressure upward conveying working condition, which comprises a suction valve shell, a transition shell and a discharge port shell, a discharge port of the suction valve shell is communicated with a feed port of the transition shell, and a discharge port of the transition shell is communicated with a feed port of the discharge port shell; a suction valve oil cylinder with a piston rod is arranged at the top of the suction valve shell, the piston rod of the suction valve oil cylinder extends into a working cavity of the suction valve shell, a suction cone valve is arranged at the end, extending into the working cavity of the suction valve shell, of the piston rod of the suction valve oil cylinder, a port B is formed in the side end of the suction valve shell, a suction valve seat is arranged on the inner side of the port B, and a port C is formed in the side end of the transition shell. A pressure valve oil cylinder with a piston rod is arranged at the top of the discharging port shell, the piston rod of the pressure valve oil cylinder penetrates through a working cavity of the discharging port shell, a pressure cone valve is arranged at the end of a feeding port of the discharging port shell, a pressure valve seat is arranged on the inner side of the feeding port of the discharging port shell, and a discharging port is formed in the discharging port shell.

Description

Technical Field

[0001] This invention belongs to the field of mining machinery and engineering machinery, and specifically relates to a compact anti-backflow distribution valve suitable for high-pressure upward conveying conditions. Background Technology

[0002] In the mining industry, high pressure in pipelines is generally caused by factors such as the slurry being pumped from bottom to top over long distances and significant differences in vertical pumping distance. Existing cone valve-type distribution valves use two sets of mutually perpendicular cone valve cylinders as their power source, one on the suction valve housing and the other on the pressure valve housing. The suction valve cylinder is a vertical conveying cylinder, while the pressure valve cylinder is a horizontal conveying cylinder. Due to the high conveying pressure within the high-pressure pipeline and the significant impact of water hammer, the backflowing high-pressure slurry directly impacts the contact surfaces of the pressure cone valve and the pressure valve cylinder with varying forces. This easily leads to eccentricity, affecting the concentricity of the cone valve and the pressure valve seat, preventing proper sealing of the high-pressure slurry, and generating jets that directly damage vulnerable parts. Furthermore, the pressure cone valve and its own weight easily cause uneven wear on the piston rod of the pressure valve cylinder, leading to sagging and affecting the coaxiality of the cone valve and valve seat. To address this, the inventor designed a distribution valve and filling industrial pump (CN118128909A) suitable for high-pressure conveying conditions, which solved the above problems to some extent. However, this design placed both the slurry inlet and the main cylinder piston interface on the suction valve body, and set the transition housing as a curved pipe with the inlet and outlet perpendicular. The pressure valve cylinder piston rod was also placed at the top of the curved transition pipe. This brought new problems in actual application, such as backflow. The slurry inlet and the main cylinder piston interface were both placed on the suction valve body, the stroke of the pressure valve cylinder was too long and the cylinder rod was prone to bending, and replacing the wear parts at the pressure valve required disassembling the entire pump head, which was inconvenient for disassembly and maintenance. Summary of the Invention

[0003] The present invention aims to improve upon prior designs to overcome their shortcomings and defects, and to provide a backflow-proof compact distribution valve suitable for high-pressure upward conveying conditions.

[0004] To achieve the above objectives, the technical solution provided by this invention is as follows: The anti-backflow compact distribution valve suitable for high-pressure upward conveying conditions includes an intake valve housing (1), a transition housing (2), and an outlet housing (3). The outlet of the intake valve housing (1) is connected to the inlet of the transition housing (2), and the outlet of the transition housing (2) is connected to the inlet of the outlet housing (3). The top of the intake valve housing (1) is provided with an intake valve cylinder (4) with a piston rod. The piston rod of the intake valve cylinder (4) extends into the working chamber of the intake valve housing (1). The working chamber is provided with a suction cone valve (5) at the end, the suction valve housing (1) is provided with a B port (6) at the side end, the suction valve seat (7) is provided inside the B port (6), and the transition housing (2) is provided with a C port (8) at the side end; the discharge housing (3) is provided with a pressure valve cylinder (9) with a piston rod at the top, the piston rod of the pressure valve cylinder (9) passes through the working chamber of the discharge housing (3), the inlet end of the cylinder is provided with a pressure cone valve (10), the inlet of the discharge housing (3) is provided with a pressure valve seat (11), and the discharge housing (3) is provided with a discharge port.

[0005] Preferably, two suction valve cylinders (4) are arranged side by side on the top of the suction valve housing (1), and the suction cone valves (5) at the piston rod ends of the two suction valve cylinders (4) alternately extend and retract within the working chamber of the suction valve housing (1); two pressure valve cylinders (9) are arranged side by side on the top of the discharge port housing (3), and the pressure cone valves (10) at the piston rod ends of the two pressure valve cylinders (9) alternately extend and retract within the working chamber of the discharge port housing (3).

[0006] Preferably, the suction valve cylinder (4) is vertically mounted on the top of the suction valve housing (1), and the pressure valve cylinder (9) is vertically mounted on the top of the discharge port housing (3).

[0007] Preferably, the plane where the feed inlet of the transition housing (2) is located is parallel to the plane where the discharge outlet is located, and the pressure valve cylinder (9) is perpendicular to the plane where the discharge outlet of the transition housing (2) is located.

[0008] Preferably, the suction valve housing (1), the transition housing (2), and the discharge port housing (3) are connected by fasteners.

[0009] Preferably, the suction cone valve (5), suction valve seat (7), pressure cone valve (10), and pressure valve seat (11) are all made of high wear-resistant steel.

[0010] Preferably, the suction cone valve (5), suction valve seat (7), pressure cone valve (10), and pressure valve seat (11) all adopt an interchangeable structure.

[0011] Preferably, the C port (8) is connected to a conveying cylinder.

[0012] Preferably, the transition housing (2) has an inspection hole on its side.

[0013] The present invention also provides a filling industrial pump, the filling industrial pump including the above-described anti-backflow compact distribution valve suitable for high-pressure upward conveying conditions.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. During feeding and suction, the pressure valve cylinder pushes forward in the feeding or suction direction to open the pressure cone valve or adopts a reverse-pull sealing method. The cylinder stroke is short, which can quickly respond to the closing of the valve cone. The push-pull process can greatly reduce resistance and wear of the slurry on the contact parts. It also avoids the impact force of the slurry caused by the high drop water hammer effect, ensuring that there is no leakage or jetting when the valve cone and valve seat are engaged under high pressure, thus extending the service life of the valve cone and valve seat.

[0015] 2. Since the movement direction of the two sets of hydraulic cylinders is perpendicular to the ground and the slurry is transported by the up-and-down movement of the two sets of parallel hydraulic cylinders, the coaxiality between the two core components that need to be sealed and fitted can be effectively guaranteed, reducing gravity interference and ensuring coaxial movement.

[0016] 3. The slurry conveying channel, consisting of the transition shell and the outlet shell, avoids direct impact of slurry on vulnerable parts, thus improving the service life of components.

[0017] 4. Inspection holes are provided on the side of the transition shell to facilitate the maintenance of vulnerable parts and the discharge of accumulated materials.

[0018] 5. The cylinder of the suction valve is mounted vertically on the top of the suction valve housing, which reduces the overall height of the entire pumping section and facilitates the maintenance of the suction valve cylinder.

[0019] Compared with the technology of distribution valves and filling industrial pumps (CN118128909A) suitable for high-pressure transmission conditions, the beneficial effects of the present invention are shown in Table 1: Table 1 Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a rear view of the present invention; Figure 3 for Figure 2 AA section view; Figure 4 This is a diagram showing the transport route for CN118128909A technology; Figure 5 This is a diagram showing the conveying path of the present invention; Figure 6 This is a diagram illustrating the effect of the present invention, which, through fluid analysis and calculation of the fluid velocity in the flow channel, results in a better, more uniform fluid flow with no turbulence. Figure 7 This is a diagram showing how water hammer forces can cause gaps to form at both ends of the transition housing and pump outlet housing in CN118128909A during prolonged operation.

[0021] In the diagram: 1. Suction valve housing; 2. Transition housing; 3. Discharge port housing; 4. Suction valve cylinder; 5. Suction cone valve; 6. Port B; 7. Suction valve seat; 8. Port C; 9. Pressure valve cylinder; 10. Pressure cone valve; 11. Pressure valve seat. Detailed Implementation

[0022] See Figures 1 to 3 The backflow-prevention compact distribution valve suitable for high-pressure upward conveying conditions includes an intake valve housing 1, a transition housing 2, and an outlet housing 3. The outlet of the intake valve housing 1 is connected to the inlet of the transition housing 2, and the outlet of the transition housing 2 is connected to the inlet of the outlet housing 3. An intake valve cylinder 4 with a piston rod is provided at the top of the intake valve housing 1. The piston rod of the intake valve cylinder 4 extends into the working chamber of the intake valve housing 1 and into the intake valve... The working chamber of housing 1 is provided with a suction cone valve 5 at one end. The suction valve housing 1 has a B port 6 on its side and a suction valve seat 7 inside the B port 6. The transition housing 2 has a C port 8 on its side. The top of the discharge housing 3 is provided with a pressure valve cylinder 9 with a piston rod. The piston rod of the pressure valve cylinder 9 passes through the working chamber of the discharge housing 3. The inlet end of the cylinder is provided with a pressure cone valve 10. The inlet of the discharge housing 3 is provided with a pressure valve seat 11 inside the inlet. The discharge housing 3 is provided with a discharge port.

[0023] The suction valve housing 1 has two suction valve cylinders 4 arranged side by side on its top, and the suction cone valves 5 at the piston rod ends of the two suction valve cylinders 4 alternately extend and retract within the working chamber of the suction valve housing 1; the discharge port housing 3 has two pressure valve cylinders 9 arranged side by side on its top, and the pressure cone valves 10 at the piston rod ends of the two pressure valve cylinders 9 alternately extend and retract within the working chamber of the discharge port housing 3.

[0024] The suction valve cylinder 4 is vertically mounted on the top of the suction valve housing 1, and the pressure valve cylinder 9 is vertically mounted on the top of the discharge port housing 3.

[0025] The plane where the feed inlet of the transition housing 2 is located is parallel to the plane where the discharge outlet is located, and the pressure valve cylinder 9 is perpendicular to the plane where the discharge outlet of the transition housing 2 is located.

[0026] The suction valve housing 1, the transition housing 2, and the discharge port housing 3 are connected by fasteners.

[0027] The suction cone valve 5, suction valve seat 7, pressure cone valve 10, and pressure valve seat 11 are all made of high wear-resistant steel.

[0028] The suction cone valve 5, suction valve seat 7, pressure cone valve 10, and pressure valve seat 11 all adopt an interchangeable structure.

[0029] Port C8 is connected to a conveying cylinder.

[0030] The transition housing 2 has an inspection hole on its side.

Claims

1. A compact anti-backflow distribution valve suitable for high-pressure upward conveying applications, characterized in that, The anti-backflow compact distribution valve suitable for high-pressure upward conveying conditions includes an intake valve housing (1), a transition housing (2), and an outlet housing (3). The outlet of the intake valve housing (1) is connected to the inlet of the transition housing (2), and the outlet of the transition housing (2) is connected to the inlet of the outlet housing (3). The top of the intake valve housing (1) is provided with an intake valve cylinder (4) with a piston rod. The piston rod of the intake valve cylinder (4) extends into the working chamber of the intake valve housing (1). The working chamber is provided with a suction cone valve (5) at the end, the suction valve housing (1) is provided with a B port (6) at the side end, the suction valve seat (7) is provided inside the B port (6), and the transition housing (2) is provided with a C port (8) at the side end; the discharge housing (3) is provided with a pressure valve cylinder (9) with a piston rod at the top, the piston rod of the pressure valve cylinder (9) passes through the working chamber of the discharge housing (3), the inlet end of the cylinder is provided with a pressure cone valve (10), the inlet of the discharge housing (3) is provided with a pressure valve seat (11), and the discharge housing (3) is provided with a discharge port.

2. The anti-backflow compact distribution valve as described in claim 1, suitable for high-pressure upward conveying conditions, characterized in that, Two suction valve cylinders (4) are arranged side by side on the top of the suction valve housing (1). The suction cone valves (5) at the piston rod ends of the two suction valve cylinders (4) alternately extend and retract within the working chamber of the suction valve housing (1). Two pressure valve cylinders (9) are arranged side by side on the top of the discharge port housing (3). The pressure cone valves (10) at the piston rod ends of the two pressure valve cylinders (9) alternately extend and retract within the working chamber of the discharge port housing (3).

3. The anti-backflow compact distribution valve as described in claim 1, suitable for high-pressure upward conveying conditions, is characterized in that... The suction valve cylinder (4) is vertically mounted on the top of the suction valve housing (1), and the pressure valve cylinder (9) is vertically mounted on the top of the discharge port housing (3).

4. The anti-backflow compact distribution valve as described in claim 3, suitable for high-pressure upward conveying conditions, characterized in that, The plane where the feed inlet of the transition housing (2) is located is parallel to the plane where the discharge outlet is located, and the pressure valve cylinder (9) is perpendicular to the plane where the discharge outlet of the transition housing (2) is located.

5. The anti-backflow compact distribution valve as described in claim 1, suitable for high-pressure upward conveying conditions, characterized in that, The suction valve housing (1), the transition housing (2), and the discharge port housing (3) are connected by fasteners.

6. The anti-backflow compact distribution valve as described in claim 1, suitable for high-pressure upward conveying conditions, characterized in that, The suction cone valve (5), suction valve seat (7), pressure cone valve (10), and pressure valve seat (11) are all made of high wear-resistant steel.

7. The anti-backflow compact distribution valve as described in claim 1, suitable for high-pressure upward conveying conditions, characterized in that, The suction cone valve (5), suction valve seat (7), pressure cone valve (10), and pressure valve seat (11) all adopt an interchangeable structure.

8. The anti-backflow compact distribution valve as described in claim 1, suitable for high-pressure upward conveying conditions, characterized in that, The C port (8) is connected to a conveying cylinder.

9. The anti-backflow compact distribution valve as described in claim 1, suitable for high-pressure upward conveying conditions, characterized in that, The transition housing (2) has an inspection hole on its side.

10. A filling industrial pump, characterized in that, The filling industrial pump includes a backflow-proof compact distribution valve as described in any one of claims 1 to 8, suitable for high-pressure upward conveying conditions.

Images